CPU cores

Peripheral availability

For licensees designing SoC products, Renesas delivers a set of 'Core support peripherals' described below. Licensees can also develop their own peripheral IP or use the extensive 3rd party program provided by Renesas

Core Support Peripherals

In order to meet the need of ensuring software compatibility across the SuperH family a set of peripherals that are typically required by the kernel or operating system have been developed. A set of Core Support Peripherals is available in a synthesizable IP design package, whilst some CPU hard macros are implemented with these peripherals already integrated.

• Real time clock (RTC)
  • The RTC is driven by a 32 kHz clock-in with maximum 1/256 second resolution. It has dynamically programmable operating frequencies and on-chip clock and calendar functions. It supports sleep and standby modes.
• Timer Unit (TMU)
  • The TMU is a 3-channel, 32-bit, auto reload counter with a choice of 7 counter input clocks, including two external clocks.
• Interrupt controller (INTC)
  • The INTC supports on-chip peripheral module interrupts and five external interrupts (NMI and IRL0 to IRL3). The priority can be set for each on-chip peripheral module interrupt. IRL0 to IRL3 can be configured as 4 independent interrupts or encoded to provide 15 external interrupt levels.
• Serial Communications interface with FIFO (SCIF)
  • The SCIF can perform asynchronous serial communication. 16-stage FIFO registers are provided for both transmission and reception, enabling fast, efficient and continuous communication.
• Clock and Power Generation (CPG)
  • The CPG provides the programmable logic to control the frequency ratios within the core. It controls the timings of the low power modes to ensure that the transitions to and from low power modes are safe. The CPG contains a single channel watchdog timer.

Example RTL

Renesas develops prototype devices and has these manufactured through the contract manufacturer's silicon shuttle service. The RTL for peripherals in these devices is made available to licensees on an 'as seen basis' and includes DMA, EMI and Flash memory interfaces.